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Let the user display their own arbitrary GeoJSON file in browse (#547)
* Let the user display their own arbitrary GeoJSON file in browse * Note about not uploading
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| <script lang="ts"> | ||
| import LayerControl from "../LayerControl.svelte"; | ||
| import { layerId } from "lib/maplibre"; | ||
| import { | ||
| hoverStateFilter, | ||
| FillLayer, | ||
| LineLayer, | ||
| CircleLayer, | ||
| GeoJSON, | ||
| } from "svelte-maplibre"; | ||
| import { showHideLayer } from "../url"; | ||
| import { FileInput } from "govuk-svelte"; | ||
| import UserDataPopup from "./UserDataPopup.svelte"; | ||
| let name = "user_data"; | ||
| let title = "Your own GeoJSON file"; | ||
| let show = showHideLayer(name); | ||
| let data = { | ||
| type: "FeatureCollection" as const, | ||
| features: [], | ||
| }; | ||
| function loadFile(filename: string, text: string) { | ||
| try { | ||
| data = JSON.parse(text); | ||
| } catch (err) { | ||
| window.alert(`Couldn't load ${filename} -- is it GeoJSON? ${err}`); | ||
| } | ||
| } | ||
| </script> | ||
|
|
||
| <LayerControl {name} {title} bind:show={$show}> | ||
| <span slot="help"> | ||
| <p>This is your own GeoJSON file.</p> | ||
| </span> | ||
|
|
||
| <div slot="controls" style="border: 1px solid black; padding: 8px;"> | ||
| <FileInput label="Load your own GeoJSON file" onLoad={loadFile} /> | ||
| <p><i>Note this file doesn't leave your computer; it's not uploaded anywhere</i></p> | ||
| <p>Currently showing {data.features.length.toLocaleString()} features</p> | ||
| </div> | ||
| </LayerControl> | ||
|
|
||
| <GeoJSON {data} generateId> | ||
| <FillLayer | ||
| {...layerId("user_data_polygons")} | ||
| manageHoverState | ||
| filter={["==", ["geometry-type"], "Polygon"]} | ||
| paint={{ | ||
| "fill-color": "blue", | ||
| "fill-opacity": hoverStateFilter(0.5, 1.0), | ||
| }} | ||
| layout={{ | ||
| visibility: $show ? "visible" : "none", | ||
| }} | ||
| hoverCursor="pointer" | ||
| eventsIfTopMost | ||
| > | ||
| <UserDataPopup /> | ||
| </FillLayer> | ||
| <LineLayer | ||
| {...layerId("user_data_polygons-outline")} | ||
| paint={{ | ||
| "line-color": "black", | ||
| "line-width": 2.5, | ||
| }} | ||
| layout={{ | ||
| visibility: $show ? "visible" : "none", | ||
| }} | ||
| /> | ||
|
|
||
| <LineLayer | ||
| {...layerId("user_data_lines")} | ||
| manageHoverState | ||
| filter={["==", ["geometry-type"], "LineString"]} | ||
| paint={{ | ||
| "line-color": "green", | ||
| "line-width": hoverStateFilter(3, 5), | ||
| }} | ||
| layout={{ | ||
| visibility: $show ? "visible" : "none", | ||
| }} | ||
| hoverCursor="pointer" | ||
| eventsIfTopMost | ||
| > | ||
| <UserDataPopup /> | ||
| </LineLayer> | ||
|
|
||
| <CircleLayer | ||
| {...layerId("user_data_points")} | ||
| manageHoverState | ||
| filter={["==", ["geometry-type"], "Point"]} | ||
| paint={{ | ||
| "circle-color": "red", | ||
| "circle-radius": hoverStateFilter(3, 5), | ||
| }} | ||
| layout={{ | ||
| visibility: $show ? "visible" : "none", | ||
| }} | ||
| hoverCursor="pointer" | ||
| eventsIfTopMost | ||
| > | ||
| <UserDataPopup /> | ||
| </CircleLayer> | ||
| </GeoJSON> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| <script lang="ts"> | ||
| import { Popup } from "lib/common"; | ||
| </script> | ||
|
|
||
| <Popup openOn="click" let:props> | ||
| <table> | ||
| <thead> | ||
| <tr> | ||
| <th>Key</th> | ||
| <th>Value</th> | ||
| </tr> | ||
| </thead> | ||
| <tbody> | ||
| {#each Object.entries(props) as [key, value]} | ||
| <tr> | ||
| <td>{key}</td> | ||
| <td>{value}</td> | ||
| </tr> | ||
| {/each} | ||
| </tbody> | ||
| </table> | ||
| </Popup> |
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